作者查詢 / wxtab019
作者 wxtab019 在 PTT [ Math ] 看板的留言(推文), 共281則
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1F→: 先拿掉｜ax+2｜<b的絕對值=>ax+2<b or ax+2>-b03/08 21:17
2F→: -b<ax+2<b 移項 -b-2<ax<b-2 移a 分成a>0 a<003/08 21:18
3F→: a>0=>(-b-2)/a<x<(b-2)/a =>(-b-2)/a=-1 (b-2)/a=203/08 21:20
4F→: a<0=>(-b-2)/a>x>(b-2)/a =>(-b-2)/a=2 (b-2)/a=-103/08 21:20
5F→: a>0解出 a=-4 b=-6 a<0解出a=-4 b=603/08 21:24
6F→: 然後又｜ax+2｜<b 不可能=-6 所以就是a=-4 b=603/08 21:25
1F→: 中獎機率呢?03/08 20:51
2F→: k=17 ?03/01 18:52
7F→: 上面說的左右兩邊 是紅色輔助線和上面84/2那條切的?03/01 00:41
8F→: 左邊右邊應該不會一樣長吧03/01 00:42
92F→: 那345 最小的整數直角三角型為什麼角度也不是整數?02/28 03:09
2F→: 沒有違背常理 只是用盲點騙你02/17 18:39
2F→: 老實說我連在說什麼也有點看不懂02/08 19:32
3F→: 這樣用<0.5比較好吧，然後列不等式 移項 比小數點02/09 13:06
9F→: 也不一定阿 Y=X的話02/06 11:53
1F→: 輾轉相除法?02/05 10:43
2F→: 阿 不對 這要算很久02/05 10:50
3F→: 阿 不對 這要算很久02/05 10:53
4F→: 設x^2=t p(x)=t^25-2t-1 q(x)=t^24-3t-402/05 10:53
5F→: p(x)-tq(x)=3t^2+2t-1=(x+1)(3x-1)02/05 10:54
6F→: (t+1)(3t-1)02/05 10:54
7F→: 上面忘記 p(x)=t^25-2t-1=h(t) q(x)=t^24-3t-4=k(t)02/05 10:56
8F→: 然後把出來的(t+1) (3t-1) 分別看是不是h(t) k(t)02/05 10:56
9F→: 的因數02/05 10:58
10F→: 你前面算法大概是沒錯 分出(3a^2-1)(a^2+1)兩個02/05 11:04
11F→: 只是要回去檢查這兩個是不是本來的因式02/05 11:05
12F→: 不然你是怎麼選最高次公因式(3x^2-1)02/05 11:05
14F→: 阿 也對 也是一樣算出餘式來取就好...02/05 12:06
3F→: 先算他們多久時間相遇 然後再乘速度 單位都沒標02/01 01:35